I would agree with you if it wasn’t for the fact that rian isn’t a bottom and he doesn’t seem like much of a verse either he was technically forced to bottom. From the first time he saw enzo he wanted to fuck him. It’s a little closed minded to think that just because he bottomed to enzo on numerous occasions it takes away his natural preference for topping and that he’s willing to stay a bottom just because. He’s not a “bottom” that’s suddenly taking the lead this is him doing what he has always been doing. They are both tops who want to top each other its not crazy for them to switch so they each get their fill of each other. Idk why ppl are shocked that a top wants to top.
That said I don’t they think they’re gonna switch because some people really can’t fathom a world where two dominant people who both want to fuck each other actually give each other a chance to do so. It’s strictly top x bottom, dom x sub.

When the bottom takes the lead all of a sudden he needs to be the top now? Or when the top is being a little submissive he needs to be the bottom? It's as if the author wants to write non stereotypical dynamics.
Some people really can't fathom a world where the ukes take the lead in bed and dominates the seme, huh.